CODEWITHSUNDEEP
phparrays
user2726041
user2726041

Reputation: 359

Search multidimensional array for value, if value doesn't exists, remove array

I have a multidimensional array containing child arrays in the following format:

[0] Array =>
    (
        [first] => Foo
        [second] => Bar
    )
[1] Array =>
    (
        [first] => Foo
        [second] => Bar
    )
[2] Array =>
    (
        [first] => Foo
        [second] => bingo
    )
[3] Array =>
    (
        [first] => jackpot
        [second] => bar
    )

I would like to search the entire array for 'bingo' and 'jackpot' and remove any child arrays that do not contain these values (in the above example, array 0 and array 1 should be removed).

I understand how to search the array using array_search('bingo', $myarray) but not how to remove the other two. Is there a simple way to achieve this?

Upvotes: 1

Views: 1004

Answers (1)

Rizier123
Rizier123

Reputation: 59681

This should work for you:

(Here I just filter all arrays out with array_filter() which does have an element with either jackpot or bingo in it, so only the arrays which doesn't have either jackpot or bingo in it will remain. After this I get all keys of these arrays with array_keys() and loop through them and unset they arrays)

<?php

    $keys = array_keys(array_filter($arr, function($v, $k){
        if(in_array("jackpot", $v) || in_array("bingo", $v) )
            return FALSE;
        return TRUE;
    }, ARRAY_FILTER_USE_BOTH));

    foreach($keys as $key)
        unset($arr[$key]);

    print_r($arr);

?>

output:

Array
(
    [2] => Array
        (
            [first] => Foo
            [second] => bingo
        )

    [3] => Array
        (
            [first] => jackpot
            [second] => bar
        )

)

EDIT:

Even a simpler solution would be just to do this:

foreach($arr as $k => $v) {
    if(!in_array("jackpot", $v) && !in_array("bingo", $v))
        unset($arr[$k]);
}

Upvotes: 3

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